Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan tao cao snippets" » "nhan tai cao snippets", "nhan dan cao snippets", "nhan va cao snippets", "nhan bao cao snippets", "nhan toan cao snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nhan tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan tao cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan tao cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.